Abstract
We present studies of velocity relaxation of moving soliton in polyacetylene by using numerical simulations within Su-Schrieffer-Heeger's (SSH) model. The system is assumed to include the phenomenological damping in the lattice dynamics. The soliton is accelerated by an external electric field to get an initial velocity. After the field was cut off, the soliton velocity declines exponentially. It is shown that the soliton can be viewed as a particle obeying the Drude theory.
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